Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Ignition Control Module: Service and Repair
Fig. 13 Distributor component identification
Fig. 14 Ignition module harness identification
Disconnect wiring harness connector at side of distributor cap and remove distributor cap.
Remove rotor and disconnect wires from module terminals.
Remove two mounting screws and remove module, Fig. 13. Two types of HEI. wiring harness are used, Fig. 14. The second type is a wiring
harness, connector and capacitor which is serviced as an assembly.
Reverse procedure to install. Prior to installation, coat bottom of new module with dielectric grease (furnished with new module) to aid in heat
transfer into distributor housing. Failure to apply grease will cause excessive heat at module and premature module failure.